Display screen or portion thereof with an animated graphical user interface



FIG. 1 is a front view of a display screen or portion thereof with ananimated graphical user interface showing a first image of the claimeddesign.

FIG. 2 is a second image thereof.

FIG. 3 is a third image thereof.

FIG. 4 is a fourth image thereof.

FIG. 5 is a fifth image thereof.

FIG. 6 is a sixth image thereof.

FIG. 7 is a seventh image thereof.

FIG. 8 is an eighth image thereof.

FIG. 9 is a ninth image thereof.

FIG. 10 is a tenth image thereof.

FIG. 11 is a eleventh image thereof.

FIG. 12 is a twelfth image thereof.

FIG. 13 is a thirteenth image thereof.

FIG. 14 is a fourteenth image thereof; and,

FIG. 15 is a fifteenth image thereof.

The broken lines illustrate the display screen or portion thereof andform no part of the claimed design. The broken lines illustrate portionsof the graphical user interface and form no part of the claimed design.

The appearance of the animated images sequentially transitions betweenthe images shown in FIGS. 1-15. The process or period in which one imagetransitions to another forms no part of the claimed design.

CLAIM We claim the ornamental design for a display screen or portionthereof with an animated graphical user interface, as shown anddescribed.